EP 0885926 A2 19981223 - Propylene polymer blends, processes of producing the same, and polypropylene resin compositions
Title (en)
Propylene polymer blends, processes of producing the same, and polypropylene resin compositions
Title (de)
Mischung von Propylenpolymeren, Verfahren zu ihrer Herstellung und Polypropylenzusammensetzung
Title (fr)
Mélange de polymères de propylène, procédé pour leur préparation et composition de polymères
Publication
Application
Priority
- JP 13217697 A 19970522
- JP 13217797 A 19970522
Abstract (en)
A propylene polymer blend is disclosed which comprises (A) a propylene- alpha -olefin random copolymer with a propylene content of 90 to 99% by weight and (B) a propylene- alpha -olefin random copolymer with a propylene content of 55 to 90% by weight, wherein the intrinsic viscosity (Ä eta BÜ) of the copolymer B ranges from 1.3 to 3.5 dl/g, the ratio (Ä eta BÜ/Ä eta AÜ) of the intrinsic viscosity (Ä eta BÜ) of the copolymer B to the intrinsic viscosity (Ä eta AÜ) of the copolymer A ranges from 0.5 to 1.3 and a product ((Ä eta BÜ/Ä eta AÜ) x (WA/WB)) of the intrinsic ratio (Ä eta BÜ/Ä eta AÜ) of both copolymers and the weight ratio (WA/WB) of both copolymers ranges from 1.0 to 4.5. A polypropylene resin composition comprises 99 to 99.9999% by weight of the propylene polymer blend and 1 to 0.0001% by weight of an alpha -crystal nucleating agent.
IPC 1-7
IPC 8 full level
C08L 23/14 (2006.01); C08L 23/16 (2006.01)
CPC (source: EP KR US)
C08F 4/12 (2013.01 - KR); C08F 4/16 (2013.01 - KR); C08F 210/06 (2013.01 - KR); C08L 23/142 (2013.01 - EP KR US); B01J 2219/182 (2013.01 - EP US); C08L 23/14 (2013.01 - EP US); C08L 23/16 (2013.01 - EP US); C08L 2201/10 (2013.01 - KR); C08L 2205/02 (2013.01 - EP KR US); C08L 2308/00 (2013.01 - EP US)
Designated contracting state (EPC)
BE DE FR
DOCDB simple family (publication)
EP 0885926 A2 19981223; EP 0885926 A3 19990519; EP 0885926 B1 20010321; EP 0885926 B2 20060816; CN 1130420 C 20031210; CN 1200382 A 19981202; DE 69800610 D1 20010426; DE 69800610 T2 20010802; DE 69800610 T3 20070405; ID 20314 A 19981126; KR 100318639 B1 20020509; KR 19980087182 A 19981205; TW 400341 B 20000801; US 6319991 B1 20011120
DOCDB simple family (application)
EP 98108923 A 19980515; CN 98108334 A 19980521; DE 69800610 T 19980515; ID 980746 A 19980519; KR 19980017963 A 19980519; TW 87107312 A 19980512; US 8167898 A 19980520